SC111 查看數據表（PDF） - Semtech Corporation
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SC111 Datasheet PDF : 7 Pages
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SINK AND SOURCE DC/DC CONTROLLER FOR SC1110
TERMINATION POWER SUPPLY APPLICATIONS
PRELIMINARY - October 9, 2000
ABSOLUTE MAXIMUM RATINGS
Parameter
VCC, BSTL to GND
PGND to GND
PHASE to GND
BSTH to PHASE
Symbol
VIN
Maximum
-0.5 to 14
± 0.5
-0.5 to 18
14
Units
V
V
V
V
Thermal Resistance Junction to Case
Thermal Resistance Junction to Ambient
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 sec
θJC
θJA
TA
TSTG
TLEAD
45
115
0 to 70
-65 to +150
300
°C/W
°C/W
°C
°C
°C
ELECTRICAL CHARACTERISTICS
Unless specified: VCC = 4.75V to 12.6V; GND = PGND = 0V; FB = VO; VBSTL = 12V; VBSTH-PHASE = 12V; TJ = 25oC
PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
POWER SUPPLY
Supply Voltage
Supply Current
Line Regulation
UNDER VOLTAGE LOCKOUT
VCC
EN = VCC
VIN = 2.5 ± 0.5V, VO = VIN/2 @ 0A
4.4
12.6
V
8
mA
0.5
%
Turn-On Threshold
TBD
4.2
TBD
V
Turn-Off Threshold
TBD
4.0
TBD
V
ERROR AMPLIFIER
Transconductance
2
mS
Open Loop DC Gain
50
dB
Bandwidth -3dB
500
kHz
COMP Source Capability
±250
µA
Input Bias
5
8
µA
OSCILLATOR
Oscillator Frequency
225
250
275
kHz
Oscillator Max Duty Cycle
90
95
%
Ramp Height
1
V
TIMING
Minimum Off-Time
100
ns
Dead Time
80
ns
© 2000 SEMTECH CORP.
2
652 MITCHELL ROAD NEWBURY PARK CA 91320
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